x + y = 122 046
y + z = 113 130
x + z = 15 726
____________________ → adun relatiile
2 x + 2 y + 2 z = 250 902
2 ( x + y + z ) = 250 902
x + y + z = 250 902 : 2
x + y + z = 125 451 → suma celor trei numere
__________________________________
125 451 - 113 130 = 12 321 ( x )
122 046 - 12 321 = 109 725 ( y )
113 130 - 109 725 = 3 405 ( z )
